The following questions from schools are answered by water experts:

1. What are the reasons for our waterways being polluted and how is this being fixed?

2. How big of a problem are poisonous algae and is it possible to get rid of them altogether?

3. Is there a way to turn sea water into fresh water and make it usable for farming?

4. What happens to all our waste water, do we reuse it?

5. How much do our actions impact the environment and how can we clean the water that has been impacted?

6. How can we help keep our water clean?

7. What happens when the groundwater runs out?

8. Is plastic pollution a problem in our fresh waterways like it is in the ocean?

9. Has there always been water on Earth? If not, where did it come from?

10. Can NZ's waterways/environment sustain the irrigation that's needed to support our farming industry?